Loom



E. D. ROY.

LOOM.

APPLICATION FILED MAR. 25, 1918.

Patented Dec. 13, 1921.

UNITED STATES PATENT OFFICE.

LOOM.

Application filed March 25, 1918.

To all whom it may concern:

Be it known that I, EDWARD DAVID ROY, a citizen of the United States ofAmerica, and a resident of Greenville, county of Greenville, State ofSouth Carolina, have invented certain new and useful Improvements inLooms, of which thefollowing is a full and clear specification.

This invention has relation to that type of loom which employs a rockingprotector shaft underneath the lay. An objection heretofore existing tothe manner in which the protector rocker shaft is journaled lies in thefact that the bearings in the sword soon become worn and render the loom1nefiicient in operation. The adjustments of the bearings to take up thewear properly have been impossible in the structures heretofore in use,and, furthermore, a part of the wear occurs upon the sword structure,thereby rendering repairs impossible and requiring that the swordstructure be junked when the Wear becomes so great as to render the loomseriously inefficient. Another obj ection is that, by reason of thelocation of the bearing of this protector shaft, lubrication of thebearing is difficult and troublesome. My invention is adapted toovercome these troubles.

In the draWi11g Figure 1 is a side elevation of a portion of a loomshowing my invention applied thereto;

Fig. 2 is a vertical section on the line 2-2 of Fig. 1;

Fig. 3 is a detail perspective view of one of the bearing-brackets; and

Fig. 4 is a vertical section on the line H of Fig. 1.

In the drawing, a designates the usual protector rock-shaft journaled ina bearing A at one end, a bearing B midway its length, and still anotherbearing at the other end of the lay, this latter bearing not being shownin my drawing. Bearing A consists of a bracket Z) attached to the swordstructure at a point underneath the lay a. In the present instance, Ihave shown this bracket as bolted to the sword structure by means of abolt (Z, but it will be observed that it may be supported in anysuitable manner at a point underneath the protector-shaft a. Thisbracket is so attached to the sword structure that its upper faceinclines upwardly and away from the sword structure, and upon thisinclined face is fastened a bearing-block Specification of LettersEatent.

Patented Dec. 13, 1921.

Serial No. 224,519.

6. The inner end of this bearing-block is grooved to partly surround theshaft a, and the sword structure is similarly grooved to receive theshaft, these two grooved surfaces forming a bearing for the shaft. Theblock e is made of wood boiled in oil, graphite and Japan wax to renderit tough and durable as well as self-lubricating.

The self-lubricating block a is adjustably secured upon the bracket, soas to be ad justed inwardly toward the shaft from time to time to takeup wear in the block; in the present instance, this adustability isprovided for by means of a slot f formed in the bracket and a bolt 9passing down through the block and said slot, side flanges it beingformed on the bracket to hold the block 0 against lateral displacement.A bearing similar to this bearing A is intended to be located at theother end of the protector-shaft. The intermediate bearing B desirablyconsists of a plate I) bolted to the under side of the lay by alag-screw g which passes through an enlarged hole in the selfoilingblock 6 and a slot or hole 7" in the plate I), said plate 5 beingprovided with a depending lug i to form one of the halves of the shaftbearing, the block 6 forming the other half.

A feature of importance in my apparatus is that the bearing-blocks areself-oiling by reason of the impregnation therein of graphite and oil.This treatment of the box with wax, oil and graphite also renders itvery tough and durable, practical experience with these bearing-blockshaving shown that they seem to last a long while. A further feature isthat, these blocks being softer than the metal part of the bearing, wearwill occur upon the blocks and not upon the metal parts, thereby greatlyprolonging the life of the loom structure. When the blocks wear out,they are very easily replaced, as is obvious. The cost of renewal istrivial, whereas the cost of renewing or repairing worn-out bearings inthe present structure is considerable. I

The self-oiling feature is important. In the present instance, thebearings have to be frequently oiled and this is very troublesomebecause of the location of the bearings. Frequent oiling is necessarybecause of the numerous and very rapid operations of theprotector-shaft, and furthermore the oil-impregnated bearing-blocksprevent the accidental oil-staining of the threads passing consequentlysmearing the adjacent parts with waste oil, which accidentally reachesthe threads passing through the loom. This serious objection is avoidedwith the present invention.

The nature and scope of the invention having been thus indicated and itspreferred embodiment having been specifically described What is claimedas new is:

1. In combination with the sword of a 100m having a bearing formedtherein close below the lay-beam and adapted to support one side of theprotector rock-shaft, an adjustable oil-impregnated bearing-block forsignature.

the other side of said protector rock-shaft, the same being detachablysecured to the sword opposite tothe bearing therein.

2. In combination with the sword I of a loom having a bearing formedtherein close below the lay-beam and adapted to support one side of theprotector rock-shaft, an adjustableself-oiling bearing for the otherside of said protector rock-shaft, the same through said adjustablebearing-block and the adjusting slot of the bracket, and means forsecurely and adjustably locking the bolt and bearing-block in position;

In testimony whereof I hereunto aflix my EDWARD nAvIn ROY.

